Turkish state-run media says the mayors of three major cities in southern Turkey have been arrested, joining a growing list of opposition figures detained since the mayor of Istanbul was imprisoned in

Saturday’s arrests come four months after the mayor of Istanbul, considered Erdoğan’s main political opponent, was jailed over corruption allegations.

Three Turkish mayors who are members of a political party that opposes Turkish President Recep Tayyip Erdogan were arrested on corruption charges Saturday morning.